body{
    background: rgba(0, 0, 0, .7);
}

@keyframes rotateloading {
    from {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes pillarloading{
    0%,100% {
        background:lightgreen
    }

    50%{
        transform:scaleY(1.75);
        background:lightblue;
    }
}

@keyframes pointloading{
    0%{
        transform: scale(1);
        opacity: 1;
    }
    100%{
        transform: scale(.3);
        opacity: 0.5;
    }
}

/* 四分之一边框loading */
.loading {
    border-radius: 50%;
    width: 100px;
    height: 100px;
    margin: 60px auto;
    border: 10px solid rgba(0, 0, 0, 0.2);
    border-top-color: #000;
    position: relative;

    animation:rotateloading 1.1s linear infinite;
}

/* 柱子 loading*/
.pillar-loading{
    width:60px;
    display: flex;
    justify-content:space-between;
    margin:100px auto;

}

.pillar-loading .pillar{
    width:8px;
    height:40px;
    border-radius:4px;
    background:lightgreen;
    animation:pillarloading 1s ease infinite;
}

.pillar-loading .pillar:nth-child(2){
    animation-delay:0.2s;
}

.pillar-loading .pillar:nth-child(3){
    animation-delay:0.4s;
}

.pillar-loading .pillar:nth-child(4){
    animation-delay:0.6s;
}

.pillar-loading .pillar:nth-child(5){
    animation-delay:0.8s;
}

/*圆点 loading*/
.point-loading{
    width:100px;
    height:100px;
    position:relative;
    margin:0 auto;
    margin-top:100px;
}

.point-loading .point{
    width:20px;
    height:20px;
    border-radius:50%;
    background:lightgreen;
    position:absolute;
    animation:pointloading 1s linear infinite;
}


.point-loading .point:nth-child(1) {
    left: 0;
    top: 50%;
    margin-top: -10px;
    animation-delay: 0.13s;
}
.point-loading .point:nth-child(2) {
    left: 14px;
    top: 14px;
    animation-delay: 0.26s;
}
.point-loading .point:nth-child(3) {
    left: 50%;
    top: 0;
    margin-left: -10px;
    animation-delay: 0.39s;
}
.point-loading .point:nth-child(4) {
    top: 14px;
    right: 14px;
    animation-delay: 0.52s;
}
.point-loading .point:nth-child(5) {
    right: 0;
    top: 50%;
    margin-top: -10px;
    animation-delay: 0.65s;
}
.point-loading .point:nth-child(6) {
    right: 14px;
    bottom: 14px;
    animation-delay: 0.78s;
}
.point-loading .point:nth-child(7) {
    bottom: 0;
    left: 50%;
    margin-left: -10px;
    animation-delay: 0.91s;
}
.point-loading .point:nth-child(8) {
    bottom: 14px;
    left: 14px;
    animation-delay: 1.04s;
}